A week or so ago, Burger King announced an advertising campaign where deleting ten friends would get you a voucher for a free whopper. It spread quite quickly, and 233,906 friends were removed by 82,771 people in less than a week. Facebook, unsurprisingly, isn't too happy - it knows its value lies in those friend links. As a result, it's banned the campaign, citing privacy reasons. Turns out that Facebook isn't keen on apps notifying users when they've been 'cut' by another friend. Full statement over the jump.